3.5.5. ICE Versions

3.5.5. ICE Versions

While this specification formally relies on [RFC8445], at the time of its publication, the majority of WebRTC implementations support the version of ICE described in [RFC5245]. The "ice2" attribute defined in [RFC8445] can be used to detect the version in use by a remote endpoint and to provide a smooth transition from the older specification to the newer one. Implementations MUST be able to accept remote descriptions that do not have the "ice2" attribute.